Question

Raffle tickets are being sold for a fundraiser. The function a(n) relates theamount of money raised to the number of tickets sold, n.It takes as input the number of tickets sold and returns as output the amountof money raisedan) = 4n - 20Which equation represents the inverse function n(a), which takes the moneyraised as input and returns the number of tickets sold as output?O A. n(e) -47,20O B. n(e) – +20OC. n() - 0-20OD. n(a) -3 -20

Answer 1

A

Since The equation is

`a(n)\text{ = 4n-20}`

To find its inverse we have to proceed to some steps

a= 4n-20

1) Swap a for n, in this case,

n=4a-20

2) Isolate n on the left side by subtracting 4a on both sides:

n -4a =4a-4a -20

n-4a=-20

3) Subtract n on both sides

a-a-4n =-20-a

-4n=-20 -a

4) Multiply it by -1

4n = 20 + a

5) Divide by 4, there you have it. The inverse function:

`n(a)=(20+a)/(4)`

To find its in